Apparatus for sterilizing milk and other liquids.



0. LOBECK. APPARATUS FOR STERILIZING MILK AND OTHER LIQUIDS.

\ APPLICATION FILED OCT. II, 1913.

1,174,592. Patented Mar. 7, 1916.

2 SHEETS-SHEET I.

fz' j Z2 72.

.0. LOBECK. APPARATUS FOR STERILIZING MILK AND OTHER LIQUIDS.

APPLICATION FILED OCT-11.1913- Patented Mar. 7, 1916.

2 SHEETSSHEET 2.

WITNESSESJ A FOB/V5) STATES PATENT caries.

'osmnronncx, or LEIPZIG, GERMANY. mmrus FOR s'rnmrzme mm: m omen mourns.

i Specification a Letters Patent.

Patented Mali. a, rare.

Application filed October 11, 1913. Serial No. 794,622.

7 To all whom it may concern.

Be it known that I, OsKAaLonEoK, a citizen of the German Empire, andresiding at Leipzig, Germany, have invented certain new and usefulImprovements in an Apparatus for Sterilizin 'Milk and other Liquids, ofwhich the ollowing is a specifica- 1 tion. I

The present invention relates to an appa-' serves for atomizing themilk.

The apparatus of the prior art presents the defect that the atomizedmilk particles.

. cannot be exposed to .a uniform temperavas ture. In particular thecone of spray from the atomizing nozzle causes the formation of a zonein which it is impossible for heat to penetrate, so that a large portionof the milk mist dropping from this cone of spray been produced in theatom1zing chamber by .indirectly heating it, or is only exposed to suchtemperature incompletely; Accordingl only the particles of milk thatreach the heating zone are actually sterillzed. In accordance. with thepresent invention th1s defect is avoided by constructingthe apparatus insuch a manner that the particles of. liquid falling from the sprayingcone of the nozzle are also exposed with certainty to the sterilizationtemperature. With this object either the form of the inner atomizingchamber is selected in such a manner thatthedropping particles of milkfall in a proper heating zone or upon a heated surface and this resultcan be attained by providing inclined surfaces or by forming the bottom.of the atomizing chamber dome shaped, conical or the like or rotatablebodies can be mounted in the atomizing chamber for conducting thefalling particles of milk into a heated zone, for example intoa zone inproximity to the heated wall or directly. onto this wall. These surfacesor bodies may be made of metal or any equivalent material. In thisconnection it is the practice in apparatus for heating and evaporatingliquids to make the heating and Impact surface rotatable and theatomizing chamber has likewise been provided with Inclined surfaces inapparatus for treating atomized liquids. As compared therewith, therotary or movable bodies inserted in the chamber in accordance with thepresent invention serve the purpose of conducting the milk or otherliquid from the atomizing.

zone into heated zones and thereby render the sterilization certain, andthe inclined surfaces (which is known apparatus merely serve ascollecting surfaces) serve for heatmg the atomized particles of milk tothe sterilization temperature.

Several embodiments of the invention are illustrated in the drawings inwhich: Figure l is a vertical section of a sterilizmg apparatus withatomizing chamber presenting a dome-shaped bottom. Fig. 2 is a verticalsection of a sterilizing apparatus with roof-like sieves in theatomizing chamber. Fig. 3 illustrates a construction with a plurality ofinserted bodies. Fig. 4 shows diagrammatically variously shapedatomizing chambers. Fig. 5 illustrates a construction in which theatomized milk is allowed to fall upon revolving metallic surfaces. isnot exposed to thetem erature that has trated in Fig. 1, a is the jacketof the heating chamber to which the heating medium In the embodiment ofthe invention illusof any appropriate kind is conducted through the pipeI), the discharge from this jacket is through the pipe 0.- d is theatomizing chamber which is indirectly heated by the heating mediumflowing through the heating jacket a. The milk or other liquid to beatomized is conducted through the pipe 7' and a part of the milk or thelike under pressure is conducted through the pipe e, so that the desiredatomizing of the milk inside the chamber d is produced. At h the bottomof the atomizing chamber is domed inward, so that the space inclosed bythedome or cone whose surface extends far into the atomizing chamberexactly at its center, is exposed to the action of the heating-medium.By the action of the nozzle, which of course may vary in form, a portionof the atomized milk or the like is forced into the heating zone andthere exposed to sterilization temperature. These particles of milkthatfall from the spray- Fig. 1,.some suitable member, preferably a. roofshaped. sieve member 2" is arranged in i thus uniformly exposed to thesterilizing ing cone of the nozzle without reachin the heatin zoneproper, fallonto the hen surface 0 the dome or cone shaped'bottom h,trickle down this and'are thus uniformly 5 and adequately exposed to thesterilizin temperature. The milk or the likewhic is thus completelysterilized flows ofi through the pipe 9 and may at oncebe cooledifdesired.

the dome or cone shaped bottom is attainable .'when the atomizingchamber itself presents a form adapted to the spraying cone,-: forexample when the atomizing chamber is provided with oblique'and heatedsurfaces in such a manner that the particles of milk dropping from thespraying cone reach these surfaces on which they are exposed to thesterilizing temperature. A construction of 2athis kindis illustratedin'Fig." 4 diagram V matically. The atomizing chamber at is com- I iposed of the surfaces 1, 2, 3, 4, 5 and 6 and the inclined surfaces 1 or3 are presented to the direction of fall of the particlesof milkdropping from the spraying.v cone and upon these surfaces the fallingparticles drop and v are there exposed to a suflicient extent to thesterilizing temperature. "The upper part of the sterilizing chamber can,however, .difier.

so in shape to any desired degree. It is, however,- advantageous in thiscase also toarrange the surfaces obliquely to the vertical directionof'fall of the descending milkparticles in order to cause them in anycase to reach heatedsurfaces so that they are exposed with certainty tothe sterilizing tem perature.

In the embodiment of the invention illus-- .trated in Fig. 2 which inthe general arrangement of the apparatus corresponds to the-atomizingchamber. 11 at an appropriate height above the bottom of the atomizingjchamber.

1 from the spraying cone reach this sieve, whererthey unite into dropswhich then fall on the edge of the sieve either in immediate proximityto the heated wall or are conducted onto this wall, trickle down it-andare ing chamber and are exposed to the steriliza- I I I temperature forasufiicient time. Tiers other are maintaine 'preciable time before theycontactwlth the An eifectsi'milar to that obtainable with surrounds aninner wall d. The heating medium is led thereto by pipe b, and flows Theparticles of milk falling 'paratus comprising a heating surfaceinterofcoarse meshed sieves have provedto be particularly advanta us forthis purpose as the individual milk particles condense thereon and infallin from one sieve to anin space for an apnext heated plata' Theseinserted bodies of whatever shape and arrangement can be givenanydesired. movement, for example a rotary movement, for the purpose ofcon-,

tinuing the displacement of the milk particles falling thereon andforcing them intothe heatin zone. Such an embodiment is shown in ig. 5in which an outer wall a away through pipe 0. The wall (2 incloses theatomizing chamber. The fluid to be sterilized is led to the atomizingchamber through the pipe -.e,,and the atomizing medium through pipe Thesterilized fluid is led away through pipe 9. The atomizing or otherdivision of the fluid can naturally proceed by any desired means. Thepeculiarity of this embodiment consists in having the sievelike plates,built into the atomizing chamber, fastened on ashaft m, which isrevoluble in a journal n, fastened to the bottom of the atomizingchamber, and which are set into revolution by means of the toothedwheelso and p, or by another form of drive, by means of the pulleys,

fastened on the shaft 7*, so that, by means of the revoluble arrangementof the disk or the plate Z, the. fallingand atomized fluid will beoutwardly driven by the. working of the centrifugal force,'and willreach the inner heated wall d, and trickles down it, whereby itisexposed to the working of the sterilizing temperature in an extremelythin 106 layer." The purpose of this embodiment is the same as that ofthe other embodiments. The means for, driving the shaft carryingthedisks may be of anykind desired without changing the essence of theinvention.

1 claim': I r

1. An apparatus for sterilizing milk and other liquids, comprising aheated chamber,

a supply pipe for supplying ajet of'liquid,

to the chamber, an atomizmg pipe for atom: izing and spraying theentering jet of liquid, a discharge pipe for carrying away thesterilized liquid fromsaid chamber, said apmediate the mouth of saidsupply pipe and the mouth 'of said discharge pipe, over which heatingsurface sprayed particles of liquid pass before reaching the said mouthof said discharge pipe.

2. An apparatus for sterili'zingmilk and other liquids, comprising aheated chamber, a supply pipe for supplyinga'jet of liquid to thechamber, an atomizing pipe for atom izing and spraying'the entering jetof liq-- uid, a discharge pipe for carrying away-the 1a.

liquid from said chamber, said u paratus comprising a heating surfaceintermediate the mouth of said supply pipe'and a a supply pi themouth ofsaid discharge p1pe, over which heating surface sprayed particles ofliquidpass before reaching the said'mouthof discharge pipe, said heatinsurfaces being inclined with respectto sai dischargegpipe; 3. Anapparatus forsterilizing milk and other liquids, comprising a heatedchamber, for supplying a jet of liquid to the cha n r,.an atomizing plpefor atomizjng and spraying the entering jetof liq- 111d adischar e ipefor-carrying awaythe liqul d 'paratus comprising ametallic surfaceinterom saidchamber, said apmediate the mouth of. said supply pipe andthemouth of said discharge pi over which metallicsurface sprayedparticles of liquid before reaching the said mouth of said arge pi andmeans for revolving said metallic sur aces.

. presence oft we other liqmds, comprising a heated chamber,

anupwardly directed supply. pipe for supplying a jet of liquid to thechamber, an atomizmg ipe for atomiz'ing and spraying the enterihg jetof'li'quid, a discharge pipe .having its mouth located below the mouthof said supply pipe for carrying away the "sterilized h'qu d from'saidchamber, said apparatuscomprising a heating surface intermediate themouth of said supply pipe and the mouthfof said. discharge pipe, over.which heating surface sprayed particles of liquid pass before reachingthe said mouth of said discharge pipe. Y

Intestimony, that I claim the foregoing as my invention; I have signedmy name in witnesses.

a v "'OS LOBECK.

, Witnesses:

ERNST Ersmw 1;,

